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Hypothesis Testing in Business Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. What are the two hypotheses used in hypothesis testing?

Question 2 2. In hypothesis testing, data that falls into the critical region is used for what purpose?

Question 3 3. Which of these best represents the null hypothesis?

Question 4 4. To use the z-test for finding a difference in population proportions, we must ensure which of the following?

Question 5 5. Why is a two-tailed test sometimes referred to as the non-directional hypothesis?

Page 2

Question 6 6. The _____ is a test where all of the significance is on only one side of the bell curve.

Question 7 7. Which statistical method could you use when you have a normal distribution of the data?

Question 8 8. What are z-tests and t-tests?

Question 9 9. Which of the following is NOT an appropriate significance level for a study?

Question 10 10. Julie has done a study and her t statistic is smaller than the number in the t-table. This means that Julie should:

Page 3

Question 11 11. In the equation for the test statistic of matched pairs, sd stands for the:

Question 12 12. Which of the following are synonyms?

Question 13 13. A group of seven people have taken a quiz and their scores are 8,9,10,5,8,9 and 10. Calculate the standard deviation.

Question 14 14.

Some high school students were divided into two groups, group A and group B, and given the same test.

Group A consisted of 6 students and the average score was 12 with a standard deviation of 2. Group B consisted of 8 students and the average score was 11 with a standard deviation of 3. The variability within the groups is:

Question 15 15. A scientist publishes a paper where they assert that their null hypothesis about the speeds required for clouds to form is false. They later find that clouds actually form much more quickly than they'd described in the paper, closer to the speeds described in the null hypothesis. What sort of error did the scientist make, and why?

Page 4

Question 16 16. Which of the following represents the probability of making a type I error?

Question 17 17. What is the first step in a hypothesis test?

Question 18 18. What is a hypothesis?

Question 19 19. Which of the following is an example of a question that may be answered using hypothesis testing for a proportion?

Question 20 20. Which of these is NOT a condition for using hypothesis testing for a proportion?

Page 5

Question 21 21. What does H_0 represent?

Question 22 22. The variability of the sample mean across different samples is called the:

Question 23 23. What type of comparison test should be used if you are assessing whether or not your data is greater than some stated value?

Question 24 24. p hat is a symbol used to represent which of the following?

Question 25 25. In statistical equations, probability is usually represented by _____.

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Question 26 26. When are t-tests most appropriate to use?

Question 27 27. Sherri is doing a study. She believes that the subjects in her study will do about the same as the entire population would. Thus, the belief that Sherri's mean does not differ from the population's mean is the _____ hypothesis, and the belief that Sherri's mean is significantly different from the population's mean is the _____ hypothesis.

Question 28 28. Which of these is an example of paired data?

Question 29 29. The t-value is supposed to be _____.

Question 30 30. Which of the following represents the probability of making a type II error?

Hypothesis Testing in Business Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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